<template>
    <div id="app">
      <div class="container">
        <!-- 顶部框模块 -->
        <div class="form-group">
          <div class="input-group">
            <h4>品牌管理</h4>
          </div>
        </div>
  
        <!-- 数据表格 -->
        <table class="table table-bordered table-hover mt-2">
          <thead>
            <tr>
              <th>编号</th>
              <th>资产名称</th>
              <th>价格</th>
              <th>创建时间</th>
              <th>操作</th>
            </tr>
          </thead>
          <tbody>
            <tr v-for="obj in list" :key="obj.id">
              <td>{{ obj.id }}</td>
              <td>{{ obj.name }}</td>
  
              <!-- 如果价格超过100，就有red这个类 -->
              <td :class="{ red: obj.price > 100 }">{{ obj.price }}</td>
              <td>{{ obj.time }}</td>
              <td><a href="#" @click="dafn(obj.id)">删除</a></td>
            </tr>
          </tbody>
          <!-- 
          <tfoot >
            <tr>
              <td colspan="5" style="text-align: center">暂无数据</td>
            </tr>
          </tfoot>
              -->
        </table>
  
        <!-- 添加资产 -->
        <form class="form-inline">
          <div class="form-group">
            <div class="input-group">
              <input
                type="text"
                class="form-control"
                placeholder="资产名称"
                v-model="name"
              />
            </div>
          </div>
          &nbsp;&nbsp;&nbsp;&nbsp;
          <div class="form-group">
            <div class="input-group">
              <input
                type="text"
                class="form-control"
                placeholder="价格"
                v-model.number="price"
              />
            </div>
          </div>
          &nbsp;&nbsp;&nbsp;&nbsp;
          <!-- 阻止表单提交 -->
          <button class="btn btn-primary" @click.prevent="btn()">添加资产</button>
        </form>
      </div>
    </div>
  </template>
  
  <script>
  export default {
    data() {
      return {
        name: "", // 名称
        price: 0, // 价格
        list: [
          { id: 100, name: "外套", price: 199, time: new Date("2010-08-12") },
          { id: 101, name: "裤子", price: 34, time: new Date("2013-09-01") },
          { id: 102, name: "鞋", price: 25.4, time: new Date("2018-11-22") },
          { id: 103, name: "头发", price: 19900, time: new Date("2020-12-12") },
        ],
      };
    },
    methods: {
      btn() {
        if (this.name.trim().length == 0 || this.price === 0) {
          alert("输入的不能为空");
          return;
        }
        // 无数组新增list 没有数据 id需要给一个固定值
        let id =
          this.list.length > 0 ? this.list[this.list.length - 1].id + 1 : 100;
  
        this.list.push({
          id: id,
          name: this.name,
          price: this.price,
          // time:new Data()
        });
      },
      dafn(id) {
        // 为什么找到id就可以删除 整个一条数据
        let index = this.list.findIndex((obj) => obj.id === id);
        this.list.splice(index, 1);
      }, 
      
    },
  };
  </script>
  
  <style >
  .red {
    color: red;
  }
  .form-group {
    width: 300px;
    display: inline-block;
  }
  </style>